April 24, 2026

Science Chronicle

A Science and Technology Blog

April 24, 2026

Science Chronicle

A Science and Technology Blog

Vaccine safety

Oral polio vaccinePolioVaccine safetyVaccines

Is the continued use of polio-causing oral vaccine justified?

During 2018-2024, there were 3,955 cases of cVDPV polio globally, averaging 565 cases per year. As on September 17, 2025, 143 cVDPV cases have been reported this year. In 2023, five polio cases in east Afghanistan were in children who had received 16 to 28 OPV doses.

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Aluminium adjuvantVaccine safetyVaccines

A large Danish study confirms aluminium in childhood vaccines does not pose health risks

Analyses of data of over 1.2 million children born in Denmark between 1997 and 2018 did not find evidence supporting an increased risk for autoimmune, atopic or allergic, or neurodevelopmental disorders associated with early childhood exposure to aluminium in vaccines

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Cardiovascular diseaseCOVID-19Emergency use authorisationVaccine safetyVaccines

Are COVID vaccines responsible for sudden deaths? 

There is no scientific evidence linking COVID vaccines to sudden deaths. On the contrary, COVID-19 disease itself poses a significant cardiovascular risk, even years after apparent recovery. Studies have shown that those who received COVID vaccine are at lower risk of subsequent cardiovascular events and deaths.

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